EP0086800B1 - Procede de coupage de lamine - Google Patents

Procede de coupage de lamine Download PDF

Info

Publication number
EP0086800B1
EP0086800B1 EP82902520A EP82902520A EP0086800B1 EP 0086800 B1 EP0086800 B1 EP 0086800B1 EP 82902520 A EP82902520 A EP 82902520A EP 82902520 A EP82902520 A EP 82902520A EP 0086800 B1 EP0086800 B1 EP 0086800B1
Authority
EP
European Patent Office
Prior art keywords
layer
laminate
groove
indentation
metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82902520A
Other languages
German (de)
English (en)
Other versions
EP0086800A1 (fr
EP0086800A4 (fr
Inventor
Dean Walter Duffield
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Precision Valve Australia Pty Ltd
Original Assignee
Precision Valve Australia Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Precision Valve Australia Pty Ltd filed Critical Precision Valve Australia Pty Ltd
Publication of EP0086800A1 publication Critical patent/EP0086800A1/fr
Publication of EP0086800A4 publication Critical patent/EP0086800A4/fr
Application granted granted Critical
Publication of EP0086800B1 publication Critical patent/EP0086800B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/084—Means for treating work or cutting member to facilitate cutting specially adapted for cutting articles composed of at least two different materials, e.g. using cutters of different shapes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1082—Partial cutting bonded sandwich [e.g., grooving or incising]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49789—Obtaining plural product pieces from unitary workpiece
    • Y10T29/4979—Breaking through weakened portion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/02—Other than completely through work thickness
    • Y10T83/0207—Other than completely through work thickness or through work presented
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/02—Other than completely through work thickness
    • Y10T83/0333—Scoring
    • Y10T83/0341—Processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/02—Other than completely through work thickness
    • Y10T83/0333—Scoring
    • Y10T83/0348—Active means to control depth of score

Definitions

  • the present invention relates to a method of and apparatus for severing laminates of a plastics material and a metal. More particularly the invention relates to a method for severing such laminates in a way which reduces the likelihood of delamination taking place between the plastics material and the metal during or after the severing of the laminate.
  • the potential for delamination may be substantially reduced by forming an indentation in the laminate which extends through the plastics layer and into the metal layer, this indentation being caused by means which cause the plastics material along the line of the indentation to be displaced substantially laterally.
  • This process differs from the prior art described above both in that the channel shaped groove is formed along the line of severance by indentation rather than by cutting, and in that the groove extends through the plastics layer into the metal layer. Indentation of the groove displaces the plastics material laterally on either side of the groove rather than removing it altogether by cutting it out as in the prior art. It is believed that these two features contribute significantly to the efficacy of the process.
  • a method of severing a laminate of the type including a layer of a metal and a layer of a flexible synthetic plastics material comprising forming a channel-shaped groove in the laminate along a line on which the laminate is to be severed, the groove extending through the plastics layer, and severing the laminate along the line of the groove, characterised in that the channel-shaped groove is of such depth as to extend through the full thickness of the plastics layer and through a part of the thickness of the metal layer, and is formed by indentation of the laminate with consequential lateral displacement of the plastics material on either side of the groove.
  • apparatus for severing a laminate of the type including a layer of a metal and a layer of a deformable synthetic plastics material comprising means to form along a line of intended severance a channel-shaped groove in the laminate, the groove extending through the plastics layer, and means for severing the laminate along the line of the groove, characterised in that the groove forming means comprises indentation means operative to produce an indented groove of substantially channel-shaped cross section along said line and of such depth as to extend through the full thickness of the plastics layer and through a part of the thickness of the metal layer and to displace the plastics material laterally on either side of the groove.
  • an indentation of substantially channel-shaped cross sectional shape and “channel-shaped groove” mean an indentation or groove which, when seen in cross section, has a pair of side walls which are parallel or inclined towards one another and which either meet at the base of the channel in an apex or are departed from one another in the base of the channel by a channel floor. It is preferred that the side walls of the channel-shaped indentation taper towards one another and are separated slightly from one another in the base of the channel by a narrow channel floor. It is particularly preferred that at least one side wall of the indentation be inclined at an obtuse angle to the surface of the laminate i.e. the included angle between the side wall of the identation and the adjacent surface of the laminate is between 90° and 180°. This angle is more preferably from 110° to 160° and most preferably 135°.
  • groove is used herein in a generic sense to cover an elongate channel in the surface of the laminate irrespective of the way in which it is formed. "Indentation” and “indented groove” are reserved for grooves which have been formed by the act of indenting the surface of the laminate.
  • the indentation in the laminate is preferably formed by stamping, pressing or rolling the laminate with a suitable tool while the laminate is suitably supported beneath the tool.
  • the indentation may be linear or curved.
  • the indentation may if desired define a closed figure such as a circle, a square or a rectangle.
  • the severing of the laminate along the line of the indentation in the metal is preferably carried out by a conventional shearing operation.
  • the method according to this invention is advantageous for three reasons. Firstly the initial indentation of the metal means that there is less metal to be sheared through in the second cutting step. This reduction in metal thickness leads to less stress deformation of the metal as it is sheared and accordingly less likelihood of disruption of the bond between the metal and plastics layers in the laminate. Secondly, it is thought that the pressure applied to the laminate as the indentation is formed may cause some kind of supplementary bond to be formed between the plastic and the metal along the line of the indentation. Thirdly the majority of the plastics material along the line of the indentation is caused to flow laterally back over the adjacent metal.
  • the present method is applicable principally to laminates comprising a single layer of plastics material and a single layer of a metal. It could also be used in laminates having more than two layers. In the case of a single metal layer sandwiched between a pair of layers of a flexible synthetic plastics material it might be necessary to make deformations on each side of the metal layer, each extending into the metal layer, to achieve the advantages of the present invention.
  • Any suitable metal could be used in the metal layer however the preferred metals are tinplate, black plate, low tin steel plate, tin free steel plate, and aluminium and its alloys.
  • Any suitable deformable synthetics plastics material may be used in the plastics layer however the polyolefins, particularly polyethylene and polypropylene, and polyamides, particularly nylon, are preferred.
  • Laminates of the type including a layer of a metal and a layer of a deformable synthetic plastics material are seen as being of particular use in the formation of lids or caps for containers.
  • lids or caps for containers include a gasket or other sealing layer designed to form a fluid tight seal between the lid or cap and the container to which it is to be applied.
  • the use of a metal/ plastics laminate would alleviate the need for a separate gasket as the plastics layer itself could form a sealing membrane between the metal of the cap or lid and the remainder of the container. This has the advantage that the separate step of applying a gasket to a formed container lid or cap is avoided as is the necessity for quality control inspection of the product after the gasket has been applied.
  • a method for forming a container top having a portion arranged to engage with and form a sealing contact with a container body comprising the steps of: forming a blank to the general shape of the container top from a laminate of the type including a layer of a metal and a layer of a deformable synthetic plastics material, the blank formation being performed so that the plastics layer is maintained in adhesion with the metal layer and extends across the surface area of the said engagement and sealing contact portion; and
  • apparatus for forming a container top having a portion arranged to engage with and form a sealing contact with a container body from a laminate of the type including a layer of a metal and a layer of a plastics material, said apparatus including:
  • the method and apparatus provide for the cutting of the laminate to form a blank which is largely but not completely separated from the laminate and the subsequent formation of the blank to the general shape of the container top by stamping or like means.
  • the indentation in the laminate is preferably formed by an annular die having a truncated V-shape in cross section.
  • the severing of the blank along the line of the indentation in the metal is preferably brought about by a cutting punch having a sharp edge adapted to engage with the metal layer of the laminate precisely opposite the indentation in the metal.
  • Container tops made according to this invention may be aerosol mounting cups, crown seals, screw caps, or a tin lid.
  • Fig. 1 shows a cross-sectional view through a laminate 10.
  • the laminate comprises a layer of tinplate 11 which is 0.28mm thick and a layer of polyethylene 12 which is 0.23mm thick.
  • the polyethylene layer 12 is bonded in face to face relationship with the tinplate in known manner.
  • the laminate 10 is formed with a channel section indentation 13 along a line 14 upon which the laminate is to be severed.
  • the indentation 13 extends right through the full thickness of the polyethylene layer 12 and into the tinplate layer by an amount of 0.13mm.
  • the indentation 13 was formed by pressing down thorugh the polyethylene layer a die to displace the polyethylene in the line of the indentation substantially laterally.
  • a thick layer of polyethylene may still cast the indented tinplate layer and may even be forced into the groin structure of the indented metal or in some other way bonded supplementarily to the metal.
  • the die had a substantially truncated V-shaped cross-section such that the indentation 13 has side walls 15 which converge at 90° to one another but which are separated at the base of the indentation by a narrow floor 16.
  • the laminate 10 is severed along the line 14 in a conventional punching or shearing operation.
  • the apparatus shown in Fig. 2 is the last two stages of a conventional die train used to manufacture mounting cups for aerosol containers such as cup 21 shown in Fig. 3.
  • the steps of the stamping of the general shape of a mounting cup are well known and a conventional die train may be used provided that sufficient clearance is allowed for the thickness of the plastics layer and the dies are highly polished to facilitate formation of the article without the plastics layer being separated from the metal layer of its laminate.
  • the method of separating a formed mounting cup blank such as cup 30 from a laminate 31 movable through the die train 32 in direction A involves a first step in which a V-section indentation is formed along the line of proposed severance which has a depth such that it extends through the plastics layer and into the metal layer of the laminate 31, and a second step of severing the blank along the line of the indentation in the metal layer.
  • the apparatus 32 shown in Fig. 2 therefore includes an indentation forming means 33 for forming an annular indentation, similar to indentation 13 of Fig. 1, in the lamination 31, and severing means 37 to sever a blank 30 from the lamination 31.
  • the indentation forming means 33 comprises an annular die 34 for producing the indentation in the laminate 31, an anvil 35 on which the blanks 30 are supported and a locating punch 36 for accurately locating the blank 30 on the anvil 35 while the press in which the die train is located is operated to bring the die down on the laminate 31 to form the indentation.
  • the severing means 37 includes a cutting punch 38 engageable with the metal layer of the laminate 31 i.e., the lower force of laminate 31 as seen in Fig. 2.
  • the cutting punch 38 has a sharp cutting edge 39 arranged to engage with the laminate precisely opposite the indentation formed by the die 34.
  • the cutting punch 38 is shown as being tubular having a cylindrical outside surface and the sharp edge 39 is at the outer edge of the free end of the punch 38.
  • the free end of the punch 38 frusto-conical so as to taper inwardly and downwardly from the edge 39 and the stamped blank 30 is arranged to be forced through a critical bore 41 of the punch 38 by the relative movement between a locating punch 42 and outer final die 43 and the cutting punch 38.
  • the outer final die 43 is engageable with the plastics layer of the laminate 31.
  • a rib 44 on the final die 43 is arranged to locate in the indentation in the laminate 31 and to provide a shearing action in cooperation with the cutting punch 38. This shearing action is obtained by providing a small clearance between the cylindrical outside surface of the cutting punch 38 and the cooperating bore in the final die 43.
  • the chamfer on the rib 44 is 45° so that the rib 44 locates precisely within the indentation in the laminate 31.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Laminated Bodies (AREA)

Claims (9)

1. Un procédé de séparation d'un stratifié (10) du type comportant une couche (11) d'un métal et une couche (12) d'une matière plastique synthétique flexible, le procédé comprenant le formage d'une rainure (12) en forme de rigole dans le stratifié (10) le long d'une ligne (14) sur laquelle le stratifié est à séparer, la rainure (13) s'étendant à travers la couche de matière plastique (12), et la séparation du stratifié (10) le long de la ligne (14) de la rainure, caractérisée en ce que la rainure (13) est d'une profondeur telle qu'elle s'étend à travers toute l'épaisseur de la couche de matière plastique (12) et à travers une partie de l'épaisseur de la couche de métal (11), et est formée par l'indentation du stratifié le long de la ligne (14), une telle indentation provoquant le déplacement latéral de la matière plastique de chaque côte de ladite ligne (14).
2. Un procédé servant à réaliser un dessus de récipient (30) ayant une portion agencée pour venir en contact avec le corps du récipient et former un contact étanche avec le corps du récipient, le dispositif comprenant les opérations:
de formage d'une ébauche selon la forme générale du dessus du récipient à partir du stratifié (10) du type comprenant une couche (11) d'un métal et une couche (12) d'une matière plastique synthétique déformable, le formage de l'ébauche étant réalisé de façon à ce que la couche de matière plastique (12) soit maintenue en adhérence avec la couche de métal et s'étende à travers la surface desdits contact et portion de contact étanche; et
de séparation de l'ébauche conformément à la revendication 1 en creusant la rainure en forme de rigole (13) dans ladite ébauche autour d'une ligne fermée située radialement vers l'extérieur desdits contact et portion de contact étanche.
3. Un procédé tel que revendiqué dans la revendication 1 ou la revendication 2 dans lequel la rainure creusée (13) en forme de rigole est d'une section transversale sensiblement en forme de V.
4. Un processus selon la revendication 3, dans lequel des parois latérales (15) de la rainure creusée (13) en forme de rigoles (13) sont inclinées chacunes vers la surface du stratifié (10) suivant un angle obtus.
5. Un procédé tel que revendiqué dans l'une quelconque des revendications 1 à 4, dans lequel le stratifié (10) est séparé le long de la ligne (14) de la rainure (13) par pénétration de la couche de métal (11) depuis la face de ce dernier opposée à la face comportant la rainure (13).
6. Un appareil (32) pour séparer un stratifié (10) du type comprenant une couche (11) d'un métal et une couche (12) d'une matière plastique synthétique déformable, l'appareil comprenant des moyens (33) servant à réaliser le long de la ligne (14) de séparation voulue une rainure en forme de rigole (13) dans le stratifié (10), la rainure (13) s'étendant à travers la couche de plastique (12), et des moyens (37) pour séparer le stratifié (10) le long de la ligne (14) de ladite rainure (13) caractérisé en ce que le moyen de formage des rainures (33) est un moyen de formage d'indentation agissant pour produire dans ledit stratifié une rainure creusée en forme de rigole (13) d'une profondeur telle qu'elle s'étend à travers toute l'épaisseur de la couche de matière plastique (12) et à travers une partie de l'épaisseur de la couche de métal (11) et pour déplacer la matière plastique latéralement de chaque côté de la rainure.
7. Un appareil pour réaliser un dessus (30) de récipient ayant une partie agencée pour venir en contact avec le corps d'un récipient et former un contact étanche avec le corps d'un récipient à partir d'un stratifié (10) du type comprenant une couche (11) d'un métal et une couche (12) d'une matière plastique, ledit appareil comprenant:
des moyens de formage d'ébauche pour former une ébauche à partir du stratifié (10) selon la forme générale du dessus de récipient (30), la couche de plastique (12) s'étendant en travers de la surface desdits contact et portion de contact étanche; et
un appareil (32) pour séparer l'ébauche selon la revendication 6, les moyens de formage d'indentation (33) agissant pour former une rainure creusée (13) dans ladite ébauche autour d'une ligne fermée située radialement vers l'extérieur desdits contact et portion de contact étanche.
8. Un appareil tel que revendiqué dans la revendication 6 ou la revendication 7, dans lequel le moyen de formage d'indentation (33) comprend une matrice (34) ayant une face de matrice de formage d'indentation qui est conformée sensiblement en V en section transversale.
9. Un appareil tel que revendiqué dans l'une quelconque des revendications 6, 7 ou 8, dans lequel le moyen séparateur (37) comprend un poinçon (38) agencé pour pénétrer dans la couche de métal (11) à partir de la face de ce denier opposée à la face comportant la rainure creusée (13).
EP82902520A 1981-08-28 1982-08-27 Procede de coupage de lamine Expired EP0086800B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU4/80 1981-08-28
AUPF048081 1981-08-28

Publications (3)

Publication Number Publication Date
EP0086800A1 EP0086800A1 (fr) 1983-08-31
EP0086800A4 EP0086800A4 (fr) 1984-08-20
EP0086800B1 true EP0086800B1 (fr) 1986-11-12

Family

ID=3769192

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82902520A Expired EP0086800B1 (fr) 1981-08-28 1982-08-27 Procede de coupage de lamine

Country Status (10)

Country Link
US (1) US4599126A (fr)
EP (1) EP0086800B1 (fr)
JP (1) JPS58501462A (fr)
BR (1) BR8207838A (fr)
CA (1) CA1185167A (fr)
DE (1) DE3274216D1 (fr)
IT (1) IT1153568B (fr)
MX (1) MX157326A (fr)
NZ (1) NZ201747A (fr)
WO (1) WO1983000841A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5282306A (en) * 1988-06-15 1994-02-01 Toyo Seikan Kaisha, Ltd. Process for the preparation of a draw-formed printed can
JP3320478B2 (ja) * 1993-02-23 2002-09-03 住友スリーエム株式会社 粘弾性体を備えた積層体製品の製造方法及び制振材
US5509339A (en) * 1994-06-22 1996-04-23 Grant; Jaret E. Device for repairing a broken reciprocating saw blade
FR2725930B1 (fr) * 1994-10-21 1996-12-20 Socratech Procede de faconnage de materiaux composites a l'aide de plusieurs outils
US6401510B1 (en) 1999-04-07 2002-06-11 3M Innovative Properties Company Method for stamping a part from a multi-layered strip
US7997114B2 (en) * 2007-04-05 2011-08-16 Material Sciences Corporation Method of stamping multilayer sheets
EP2155413B1 (fr) * 2007-05-25 2015-08-12 Magna International Inc. Procédé de découpe d'ébavurage intégrée
US20120181197A1 (en) * 2011-01-17 2012-07-19 Stafast Products, Inc. Collated t-nut apparatus
US10926928B2 (en) 2015-04-17 2021-02-23 Abb Schweiz Ag High strength cable tie
WO2018190782A1 (fr) * 2015-04-17 2018-10-18 Abb Technology Ag Attache de câble haute résistance
CA2994583C (fr) 2017-02-16 2022-07-05 Abb Schweiz Ag Bande d'attache de cable renforcee et procede de fabrication

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2284254A (en) * 1938-07-20 1942-05-26 Allegheny Ludlum Steel Method of treating composite strip products
US2352339A (en) * 1942-09-04 1944-06-27 Western Electric Co Apparatus for blanking materials
US3812002A (en) * 1964-07-01 1974-05-21 Continental Can Co Laminate construction
US3547724A (en) * 1967-02-07 1970-12-15 Rogers Corp Method of and apparatus for producing printed circuits
GB1307211A (en) * 1969-02-07 1973-02-14 Vandervell Products Ltd Methods and apparatus for cutting laminated strip material
US3656379A (en) * 1969-10-22 1972-04-18 Vandervell Products Ltd Methods of cutting laminated strip material
US3713944A (en) * 1970-05-28 1973-01-30 Essex International Inc A method of manufacture of printed circuits by die stamping
US4151431A (en) * 1973-12-06 1979-04-24 Johnson Howard R Permanent magnet motor
DE2844238C2 (de) * 1978-10-11 1984-08-23 Focke & Co, 2810 Verden Packung, insbesondere Zigaretten-Packung, aus Verbundfolie sowie Vorrichtung zum Herstellen von Reißlinien in einer Verbundfolie

Also Published As

Publication number Publication date
US4599126A (en) 1986-07-08
EP0086800A1 (fr) 1983-08-31
NZ201747A (en) 1985-05-31
CA1185167A (fr) 1985-04-09
BR8207838A (pt) 1983-09-06
MX157326A (es) 1988-11-15
DE3274216D1 (en) 1987-01-02
JPS58501462A (ja) 1983-09-01
EP0086800A4 (fr) 1984-08-20
IT8223052A0 (it) 1982-08-30
IT1153568B (it) 1987-01-14
IT8223052A1 (it) 1984-03-01
WO1983000841A1 (fr) 1983-03-17

Similar Documents

Publication Publication Date Title
US3850340A (en) Nestable container and apparatus for and method of making same
US6082944A (en) Resealable beverage container and top therefor
TWI608972B (zh) 製造易拉環冠形瓶蓋的裝置及相關的方法
US4215795A (en) End structure for a can body and method of making same
EP0086800B1 (fr) Procede de coupage de lamine
US3759206A (en) Push-in easy-opening closures
US4051707A (en) Method and apparatus for making drawn containers
CA1123763A (fr) Appareil, methode et fermeture prefaconnee pour le scellement de boites scellees ou de contenants analogues a paroi interieure enduite, et appareil et methode servant a pratiquer une zone de rupture dans ladite fermeture
JPH0521660B2 (fr)
US3435653A (en) Forming method and apparatus
US4862722A (en) Method for forming a shell for a can type container
US3760752A (en) Easy-opening device for sheet metal containers and the like and method of producing such devices
EP0226318B1 (fr) Capsules
US3997076A (en) Tabless container opening device
USRE28910E (en) Push-in easy-opening closures
HUP0104165A2 (hu) Eljárás és berendezés bordázott konzervdobozfedél kialakítására
US3912114A (en) Digitally openable container closure
EP0811441B1 (fr) Couvercle de boite metallique a ouverture facile amelioree et procede de fabrication de ce couvercle
US3931909A (en) Push-in easy-opening closures
US3996867A (en) Process and apparatus for forming tearably detachable portion on sheet
US3993010A (en) Process and apparatus for forming rearably detachable portion on sheet
US4088242A (en) Thin metal foil membrane can closure having an easy-open scoreline
US3977341A (en) Easy opening container component
US3938455A (en) Method of forming and a construction for a digitally openable container closure
US3223063A (en) Method of making a low pressure, hermetically sealed, sheet metal container

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19830706

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 3274216

Country of ref document: DE

Date of ref document: 19870102

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900716

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19900718

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19900731

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19910827

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19920430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19920501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST